National Geodetic Survey, Retrieval Date = FEBRUARY 27, 2000 DX5172 *********************************************************************** DX5172 DESIGNATION - THOMAS DX5172 PID - DX5172 DX5172 STATE/COUNTY- CA/RIVERSIDE DX5172 USGS QUAD - ANZA (1988) DX5172 DX5172 *CURRENT SURVEY CONTROL DX5172 ___________________________________________________________________ DX5172* NAD 83(1992)- 33 37 16.84030(N) 116 40 57.94379(W) ADJUSTED DX5172* NAVD 88 - 2077.7 (meters) 6817. (feet) VERTCON DX5172 ___________________________________________________________________ DX5172 EPOCH DATE - 1991.35 DX5172 X - -2,388,198.890 (meters) COMP DX5172 Y - -4,751,966.025 (meters) COMP DX5172 Z - 3,512,683.023 (meters) COMP DX5172 LAPLACE CORR- 3.23 (seconds) DEFLEC99 DX5172 ELLIP HEIGHT- 2047.05 (meters) GPS OBS DX5172 GEOID HEIGHT- -31.12 (meters) GEOID99 DX5172 DX5172 HORZ ORDER - FIRST DX5172 ELLP ORDER - FOURTH CLASS I DX5172 DX5172.The horizontal coordinates were established by classical geodetic methods DX5172.and adjusted by the National Geodetic Survey in June 1996. DX5172.The horizontal coordinates are valid at the epoch date displayed above. DX5172.The epoch date for horizontal control is a decimal equivalence DX5172.of Year/Month/Day. DX5172 DX5172.The NAVD 88 height was computed by applying the VERTCON shift value to DX5172.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) DX5172 DX5172.The X, Y, and Z were computed from the position and the ellipsoidal ht. DX5172 DX5172.The Laplace correction was computed from DEFLEC99 derived deflections. DX5172 DX5172.The ellipsoidal height was determined by GPS observations DX5172.and is referenced to NAD 83. DX5172 DX5172.The geoid height was determined by GEOID99. DX5172 DX5172; North East Units Scale Converg. DX5172;SPC CA 6 - 2,169,984.20 6,429,922.47 sFT 0.99996668 -0 14 16.1 DX5172;SPC CA 6 - 661,412.506 1,959,844.290 MT 0.99996668 -0 14 16.1 DX5172;UTM 11 - 3,720,217.808 529,425.634 MT 0.99961067 +0 10 32.4 DX5172 DX5172: Primary Azimuth Mark Grid Az DX5172:SPC CA 6 - RED MT LOT 273 57 41.4 DX5172:UTM 11 - RED MT LOT 273 32 52.9 DX5172 DX5172|---------------------------------------------------------------------| DX5172| PID Reference Object Distance Geod. Az | DX5172| dddmmss.s | DX5172| DX5061 PALOMAR OBSERVATORY DOME 200 APPROX.33.9 KM 2095825.5 | DX5172| THOMAS RM 1 9.272 METERS 22017 | DX5172| DX5183 RED MT LOT APPROX.15.4 KM 2734325.3 | DX5172| THOMAS RM 2 5.440 METERS 31416 | DX5172|---------------------------------------------------------------------| DX5172 DX5172 SUPERSEDED SURVEY CONTROL DX5172 DX5172 NAD 83(1986)- 33 37 16.83823(N) 116 40 57.95017(W) AD(1984.00) 1 DX5172 NAD 27 - 33 37 16.74742(N) 116 40 54.87834(W) AD( ) 1 DX5172 NGVD 29 - 2076.8 (m) 6814. (f) GPS OBS DX5172 DX5172.Superseded values are not recommended for survey control. DX5172.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. DX5172.See file dsdata.txt to determine how the superseded data were derived. DX5172 DX5172_MAGNETIC: N = NO MAGNETIC MATERIAL DX5172_STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD DX5172+STABILITY: POSITION/ELEVATION WELL DX5172_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR DX5172+SATELLITE: SATELLITE OBSERVATIONS - 1986 DX5172 DX5172 HISTORY - Date Condition Recov. By DX5172 HISTORY - 1939 MONUMENTED CGS DX5172 HISTORY - 1986 GOOD NGS DX5172 DX5172 STATION DESCRIPTION DX5172 DX5172'DESCRIBED BY COAST AND GEODETIC SURVEY 1939 (FGJ) DX5172'ABOUT 18-1/2 MILES SOUTHEAST OF HEMET AND 4-1/2 MILES NORTH DX5172'OF ANZA AND ABOUT 1/4 MILE NORTH-NORTHWEST OF THOMAS LOOKOUT DX5172'TOWER (USFS). ON THE NORTHWEST POINT OF THOMAS MOUNTAIN, DX5172'ABOUT 100 FEET NORTH OF HIGHEST POINT OF KNOLL, IN SEC. 28, DX5172'T. 6 S., R. 3 E. DX5172' DX5172'REACHED FROM JUNCTION OF STATE HIGHWAYS 83 AND 74 IN WEST DX5172'EDGE OF HEMET BY GOING EAST AND SOUTHEAST ON HIGHWAY 74 FOR DX5172'18.7 MILES TO OIL ROAD LEADING LEFT TO IDYLLWILD. CONTINUE DX5172'ON HIGHWAY 74 FOR 9 MILES TO A SHELL OIL FILLING STATION AND DX5172'STORE ON RIGHT (THOMAS MT. STORE). CONTINUE 1.45 MILES TO A DX5172'TRUCK ROAD LEADING RIGHT THROUGH LOCKED GATE AT SIGN THOMAS DX5172'MT. THIS GATE IS LOCKED BY A FOREST SERVICE LOCK. TURN RIGHT DX5172'THROUGH GATE AND FOLLOW MAIN TRAVELED TRUCK ROAD 6.15 MILES TO DX5172'FORK AT SIGN TOOL BOX SPRINGS. KEEP LEFT FORK 1.95 MILES TO DX5172'ANOTHER FORK. KEEP LEFT FORK 0.4 MILE TO LOOKOUT TOWER AND DX5172'END OF TRUCK TRAVEL. FROM HERE CONTINUE NORTHWESTERLY DX5172'ALONG TOP OF RIDGE ABOUT 1/4 MILE TO STATION. DX5172' DX5172'SURFACE AND REFERENCE MARKS ARE STANDARD BRONZE DISKS IN DX5172'OUTCROPPING BEDROCK, NOTES 2 AND 12A. DX5172' DX5172'RED MOUNTAIN LOOKOUT TOWER (U.S.F.S.) WAS USED AS AN AZIMUTH DX5172'MARK. DX5172 DX5172 STATION RECOVERY (1986) DX5172 DX5172'RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 (MRM) DX5172'THE STATION WAS RECOVERED AT THIS DATE, DX5172'IN GOOD CONDITION. REFERENCE MARK 2 WAS RECOVERED IN GOOD DX5172'CONDITION. REFERENCE MARK 1 WAS SEARCHED FOR BUT NOT RECOVERED. DX5172'THE ROCK OUTCROP WAS LOCATED BUT DISK IS MISSING. NO DISTANCE DX5172'TO REFERENCE MARK 2 WAS MEASURED AT THIS DATE. DX5172' DX5172'THE STATION IS LOCATED ABOUT 29.8 KM (18.5 MI) DX5172'SOUTHEAST OF HEMET, DX5172'7.2 KM (4.5 MI) NORTH OF ANZA, ON THE NORTHWEST POINT OF THOMAS DX5172'MOUNTAIN. DX5172'OWNERSHIP--U.S. GOVERNMENT, SAN BERNARDINO NATIONAL FOREST. DX5172' DX5172'TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAYS 243 AND 74 DX5172'IN MOUNTAIN CENTER, GO SOUTHEAST FOR 8.1 KM (5.05 MI) ON HIGHWAY 74 DX5172'TO A DIRT ROAD RIGHT AND SIGN (THOMAS MTN 6S13) ON THE RIGHT. TURN DX5172'RIGHT AND GO SOUTHERLY FOR 7.5 KM (4.65 MI) ON THE WINDING DIRT DX5172'ROAD UP THOMAS MOUNTAIN TO A FORK AND SIGN (THOMAS MTN 3). FOLLOW DX5172'THE LEFT FORK AND GO UPHILL FOR 5.0 KM (3.1 MI) ON A DIRT ROAD TO DX5172'THE THOMAS MOUNTAIN CAMP AREA ON THE LEFT AND A DIRT ROAD RIGHT. DX5172'TURN RIGHT AND GO UPHILL FOR 0.6 KM (0.4 MI) ON THE DIRT ROAD TO A DX5172'CONCRETE FOUNDATION FOR OLD LOOKOUT TOWER. CONTINUE AHEAD FOR 0.4 DX5172'KM (0.25 MI) ON THE DIRT ROAD TO THE STATION ON THE RIGHT. DX5172' DX5172'THE STATION IS A STANDARD CGS DISK DX5172'STAMPED---THOMAS 1939---, DX5172'SET INTO A DRILL HOLE IN THE TOP OF A TRIANGULAR SHAPED ROCK DX5172'OUTCROP OF 1.35 METERS LARGEST DIMENSION PROJECTING 30 CM ABOVE DX5172'GROUND. LOCATED DX5172'6.07 METERS (19.9 FT) NORTH-NORTHEAST FROM THE APPROXIMATE CENTER DX5172'OF THE DIRT ROAD AND DX5172'5.46 METERS (17.9 FT) EAST-SOUTHEAST FROM THE THOMAS REFERENCE MARK DX5172'2. DX5172' DX5172'REFERENCE MARK NO. 2 IS A STANDARD CGS DISK DX5172'STAMPED---THOMAS NO 2 1939---, DX5172'SET INTO A DRILL HOLE IN ROCK OUTCROP OF 2.0 METERS LARGEST DX5172'DIMENSION. LOCATED DX5172'5.46 METERS (17.9 FT) WEST-NORTHWEST FROM THE STATION THOMAS AND DX5172'5.12 METERS (16.8 FT) NORTHEAST FROM THE APPROXIMATE CENTER OF THE DX5172'DIRT ROAD. DX5172'MARK IS 0.3 METERS ABOVE THE STATION. DX5172' DX5172'PINYON FLAT CONNECTIONS TO NETWORK, JUNE 1986. DX5172' DX5172'THIS STATION SUITABLE FOR GPS SURVEYS. DX5172' DX5172'DESCRIBED BY D.F. CALLAHAN.